US4389587A - Unitary sleeving insulation - Google Patents

Unitary sleeving insulation Download PDF

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Publication number
US4389587A
US4389587A US06/324,307 US32430781A US4389587A US 4389587 A US4389587 A US 4389587A US 32430781 A US32430781 A US 32430781A US 4389587 A US4389587 A US 4389587A
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US
United States
Prior art keywords
sleeving
insulating
fiberglass
insulation
resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/324,307
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English (en)
Inventor
Herbert R. Levine
L. Gerard Landry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suflex Inc
RTX Corp
Original Assignee
United Technologies Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United Technologies Corp filed Critical United Technologies Corp
Assigned to ESSEX GROUP, INC., A CORP. OF MI. reassignment ESSEX GROUP, INC., A CORP. OF MI. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LANDRY, L. GERARD, LEVINE, HERBERT R.
Priority to US06/324,307 priority Critical patent/US4389587A/en
Priority to EP83900224A priority patent/EP0094424B1/de
Priority to DE8383900224T priority patent/DE3269274D1/de
Priority to PCT/US1982/001634 priority patent/WO1983001870A1/en
Priority to DE1983900224 priority patent/DE94424T1/de
Priority to ES1982278757U priority patent/ES278757Y/es
Publication of US4389587A publication Critical patent/US4389587A/en
Application granted granted Critical
Assigned to CHEMICAL BANK reassignment CHEMICAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ESEX GROUP, INC.
Assigned to CHASE MANHATTAN BANK reassignment CHASE MANHATTAN BANK SECURITY AGREEMENT Assignors: ESSEX GROUP, INC.
Assigned to BANKERS TRUST COMPANY, AS COLLATERAL AGENT reassignment BANKERS TRUST COMPANY, AS COLLATERAL AGENT SECURITY AGREEMENT Assignors: DNE TECHNOLOGIES, INC., ESSEX GROUP, INC., ESSEX TECHNOLOGY, INC., SUPERIOR TELECOMMUNICATIONS INC.
Assigned to SUPERIOR TELECOMMUNICATIONS INC., DNE TECHNOLOGIES INC., ESSEX GROUP, INC., ESSEX TECHNOLOGY, INC. reassignment SUPERIOR TELECOMMUNICATIONS INC. RELEASE OF INTELLECTUAL PROERTY Assignors: CHASE MANHATTAN BANK, THE (F/K/A CHEMICAL BANK), AS ADMINISTRATIVE AGENT
Assigned to SUFLEX INCORPORATED reassignment SUFLEX INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ESSEX GROUP, INC., ESSEX TECHNOLOGY, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
    • H01B3/084—Glass or glass wool in binder
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/204—Di-electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/744—Non-slip, anti-slip
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S138/00—Pipes and tubular conduits
    • Y10S138/02—Glass fiber

Definitions

  • the field of art to which this invention pertains is electrically insulated conductors and specifically insulation sleeving for such conductors.
  • VPI vacuum pressure impregnation
  • previously insulation-wrapped coil is processed by: (a) preheating it; (b) subjecting it to a vacuum for a predetermined period of time; (c) introducing the insulating resin in liquid form into the coil under vacuum; (d) increasing the pressure on the coil in the presence of the liquid resin until it substantially impregnates the coil; (e) releasing the pressure and draining off any resin which does not so impregnate; and (f) baking the impregnated coil.
  • impregnation method is intended to introduce the impregnating insulating resin into all the existing interstices of the coil and insulating coil wrapping, since unimpregnated areas result in voids which cause increased dielectric breakdowns or lower dielectric breakdown voltages.
  • junction points at which the coil leads are brazed to the form wound coil must be insulated, many manufacturers have been using multiple layers of sleeving to obtain such insulation. Typically, either one of two combinations is used to insulate this junction point and the lead itself: either a heat treated fiberglass sleeving placed over Grade A acrylic resin coated fiberglass sleeving (by American Society for Testing and Materials (ASTM) D 372 standards sleeving which can withstand 7000 volts average impressed voltage without breakdown), or heat treated fiberglass sleeving placed over two lengths of Grade A acrylic resin coated fiberglass sleeving which previously have been "telescoped" (inserted one into the other).
  • ASTM American Society for Testing and Materials
  • the present invention is directed to a unitary electrical insulating sleeving which allows coil manfacturers to use only a unitary length of sleeving to insulate electrical leads without having to resort to multiple steps such as the telescoping of several lengths of sleeving to attain adequate mechanical as well as electrical protection.
  • the sleeving according to the present invention comprises an electrically insulating inner layer, such as fiberglass, overcoated with an electrically insulating polymer.
  • the polymer coated sleeving has a second insulating sleeving overbraided upon it.
  • the overbraided sleeving is securely bonded to the inner insulating layer by means of a polymeric binder in such amounts and so disposed as to prevent slippage of the overbraided sleeving and minimize fray.
  • the unitary insulating sleeving according to the present invention in addition to having requisite mechanical and electrical properties for use on such coil leads specifically adapted to VPI processing can also be utilized reliably with minimal effort.
  • FIG. 1 shows typical unitary insulation sleeving according to the present invention.
  • FIG. 2 is a cross-section of the sleeving of FIG. 1 taken along the line 2--2 of FIG. 1.
  • the inner insulating layer 1 which can be fiberglass or other electrically insulating tubular material is overcoated with an insulating polymer 2 such as alkyl esters of acrylic acids and the thus coated tubular shaped material is then overbraided with an insulating sleeving 3 such as fiberglass.
  • the binder material 4 which fixes the sleeving to the inner resin layer is impregnated into the sleeving.
  • the outer insulating sleeving 3 is also shown in FIG. 1.
  • any conventionally used insulating material may be used according to the present invention, although electrical grade fiberglass braided sleeving meeting the requirements of National Electrical Manufacturing Association Standard No. VS1, is preferred.
  • Other materials which may be used are knitted and braided sleeving made from organic fibers such as rayon, polyester, nylon, aramid and cotton.
  • the inner insulation layer is then coated primarily on its exterior surface with an electrically insulating polymeric material.
  • materials particularly suitable for use according to the present invention include water based acrylic polymers such as BF Goodrich 2600 X138, 2600 X91, 2600 X84, 2600 X172, 2600 X136, 2679, 2671, and mixtures thereof; Rohm & Haas AC658, AC604, E358, E1683, and mixtures thereof.
  • Examples of other polymers which also may be used include silicone resins and rubbers, vinyl resins such as polyvinyl chloride and vinyl chloride-vinyl acetate copolymers, polyurethanes, epoxy resins, polyesters, polyimides, polysulfones, polyamide-imides and mixtures thereof.
  • This material can be applied by any conventional method such as dipping, spraying, brushing, etc.
  • the resin material be applied only to the exterior of the inner insulation layer.
  • the thickness of the inner insulation layer is generally about 0.008 inch to 0.050 inch (0.02 cm to 0.13 cm) thick and the polymeric coating thickness is generally 0.005 inch to 0.030 inch (0.013 cm to 0.076 cm) thick.
  • the function of the resin overcoating is to improve the electrical and/or thermal properties of the inner insulation layer.
  • a second insulating sleeving is overbraided (by conventional means) upon it. It should be noted, however, that while this operation is described in terms of "overbraiding", any conventional textile process of constructing such sleeving can be used.
  • the thickness of this sleeving is generally from 0.008 inch to 0.050 inch (0.02 cm to 0.13 cm) thick.
  • the primary function of this second sleeving is to provide the needed flexibility at the time of application of the unitary sleeving to the coil leads and to provide a particularly suitable substrate to which the VPI resin can thoroughly impregnate and adhere in subsequent processing.
  • a step key to the present invention is performed where the thus formed sleeving is impregnated with a polymeric binder to secure the sleeving into a unitary composite.
  • a polymeric binder to secure the sleeving into a unitary composite.
  • any compatible binder can be used (note the polymers described below), the above described acrylic binders are particularly preferred.
  • the binder is impregnated into the overbraided sleeving by any conventional techniques such as dipping, brushing, or spraying, and used in such amounts to secure the overbraiding to the rest of the composite without producing an overly stiff product. Amounts such as 0.5% to 25% by weight based on total weight of the unitary insulating sleeving can be used.
  • a woven fiberglass inner insulation layer having a 0.182 inch to 0.198 inch (0.462 cm. to 0.503 cm.) inner diameter was overcoated with a heat reactive acrylic latex polymer cured to a thickness of about 12 to about 20 mils followed by overbraiding with ECG-150 2/3 fiberglass to provide a Grade A acrylic resin coated fiberglass sleeving.
  • This article was then immersed in the same acrylic resin to a final dry resin pick-up of about 1% by weight based on total weight of product, thus forming a secure unitary insulation sleeving.
  • Example 1 The same procedure as in Example 1 was followed except for the fiberglass overbraiding where a larger diameter yarn was used (ECG-150 3/4), and the bonding resin pick-up was increased from the about 1% of Example 1 to about 2% in this example.
  • the material of Example 1 can be considered a "Light Wall” material and the material of the Example 2 can be considered a "Heavy Wall” material.
  • a 0.032 inch (0.081 cm) thick wall heat treated, uncoated fiberglass sleeving was slipped over the same woven fiberglass inner insulation layer as described in Example 1, the diameter of the heat treated, uncoated fiberglass sleeving being 0.182 inch to 0.198 inch (0.462 cm. to 0.503 cm.)
  • a Grade A acrylic resin coated fiberglass sleeving as described in Example 1 was placed inside a Grade A acrylic resin coated sleeving of the same type having an inner diameter of 0.258 inch to 0.278 inch (0.655 cm. to 0.706 cm.).
  • the two-layer composite article was next placed inside a standard wall (wall thickness of 0.012 in. to 0.020 in., 0.03 cm. to 0.05 cm) heat treated uncoated fiberglass sleeving having an inner diameter of 0.258 in. to 0.278 in. (0.655 cm. to 0.706 cm.).
  • All specimens were 6 inches (15.24 cm.) long.
  • the twenty prepared specimens were placed in a holder, preheated at 65° C. for one-half hour, and then subjected to the following procedure to duplicate the conditions the specimens would be subjected to under conventional VPI processing.
  • the specimen holder was placed in a vacuum pressure impregnation tank and subjected to a vacuum of twenty inches (50.8 cm) mercury and held there for 30 minutes.
  • Example 2 is comparable to, and on average out-performs the conventionally used material of Example 3. As evidenced by the results shown in Example 1, even a thinner walled material than conventionally used had good dielectric strength. Although the dielectric strengths for the specimens of Example 4 exceeded the specimens of the present invention as indicated by Examples 1 and 2, it should be noted that the specimens of Example 4 contained an additional layer of fiberglass sleeving insulating not present in any of the other examples.
  • the unitary sleeving according to the present invention provides a method of insulating coil leads which is not highly labor intensive and which does not rely heavily on operator skill and conscientiousness.
  • the unitary electrical insulating sleeving allows coil manufacturers to use only a unitary length of sleeving to insulate electrical leads without having to resort to multiple steps such as the telescoping of several lengths of sleeving to attain adequate mechanical as well as electrical protection. Also, there is no danger of slippage in the relative layers as could be prevalent, for example with the material of Examples 3 and 4, thus having the potential to reduce these dielectric values.
  • the system according to the present invention is fully compatible with the VPI system. It should also be noted that while this invention has been primarily described in terms of advantageous use with VPI processing, it also has similar advantages in conjunction with other processing operations such as varnish dipping operations.
US06/324,307 1981-11-23 1981-11-23 Unitary sleeving insulation Expired - Lifetime US4389587A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US06/324,307 US4389587A (en) 1981-11-23 1981-11-23 Unitary sleeving insulation
EP83900224A EP0094424B1 (de) 1981-11-23 1982-11-22 Isolationshülse aus einem stück
DE8383900224T DE3269274D1 (en) 1981-11-23 1982-11-22 Unitary sleeving insulation
PCT/US1982/001634 WO1983001870A1 (en) 1981-11-23 1982-11-22 Unitary sleeving insulation
DE1983900224 DE94424T1 (de) 1981-11-23 1982-11-22 Einheitsisolationshuelse.
ES1982278757U ES278757Y (es) 1981-11-23 1982-11-23 Manguito electricamente aislante perfeccionado.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/324,307 US4389587A (en) 1981-11-23 1981-11-23 Unitary sleeving insulation

Publications (1)

Publication Number Publication Date
US4389587A true US4389587A (en) 1983-06-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
US06/324,307 Expired - Lifetime US4389587A (en) 1981-11-23 1981-11-23 Unitary sleeving insulation

Country Status (5)

Country Link
US (1) US4389587A (de)
EP (1) EP0094424B1 (de)
DE (1) DE3269274D1 (de)
ES (1) ES278757Y (de)
WO (1) WO1983001870A1 (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4511598A (en) * 1982-10-04 1985-04-16 Xerox Corporation Electromechanical transducer protecting
US4775566A (en) * 1986-08-15 1988-10-04 Essex Group, Inc. High temperature flexible unitary sleeving insulation
US5032199A (en) * 1986-08-15 1991-07-16 Essex Group, Inc. Method of making a high temperature flexible unitary sleeving insulation
US5498461A (en) * 1993-06-25 1996-03-12 Safe-T-Quip Corporation Protective metallized loop laminate
DE19520332A1 (de) * 1995-06-02 1996-12-05 Micafil Isoliertechnik Ag Nutisolation
EP0806599A1 (de) * 1996-05-07 1997-11-12 Luigi Ture System zur Wärmedämmung
US5907205A (en) * 1996-07-08 1999-05-25 Herman; Robert Wayne Constant reluctance rotating magnetic field devices with laminationless stator
US20020047442A1 (en) * 1999-01-07 2002-04-25 Mark Lee Miller Composite electrical insulation with contacting layer and method of making the same
US20020146521A1 (en) * 2001-02-20 2002-10-10 Toas Murray S. Moisture repellent air duct products
US20040118472A1 (en) * 2002-11-27 2004-06-24 Mota Joseph E. Air duct containing an organic liner material
US20040137181A1 (en) * 2003-01-14 2004-07-15 Ruid John O. Duct board with water repellant mat
US6769455B2 (en) * 2001-02-20 2004-08-03 Certainteed Corporation Moisture repellent air duct products
US20050098255A1 (en) * 2003-11-06 2005-05-12 Lembo Michael J. Insulation product having nonwoven facing and process for making same
US20050112966A1 (en) * 2003-11-20 2005-05-26 Toas Murray S. Faced mineral fiber insulation board with integral glass fabric layer
US20050218655A1 (en) * 2004-04-02 2005-10-06 Certain Teed Corporation Duct board with adhesive coated shiplap tab
US20050221061A1 (en) * 2004-04-02 2005-10-06 Toas Murray S Method and apparatus for forming shiplap edge in air duct board using molding and machining
US20060019568A1 (en) * 2004-07-26 2006-01-26 Toas Murray S Insulation board with air/rain barrier covering and water-repellent covering
US20060078699A1 (en) * 2004-10-12 2006-04-13 Mankell Kurt O Insulation board with weather and puncture resistant facing and method of manufacturing the same
US20060083889A1 (en) * 2004-10-19 2006-04-20 Schuckers Douglass S Laminated duct board
US7279438B1 (en) 1999-02-02 2007-10-09 Certainteed Corporation Coated insulation board or batt
EP2131465A1 (de) * 2007-03-29 2009-12-09 Relats, S.A. Isolationsröhre für kabel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237079C2 (de) * 1992-11-03 1996-10-02 Abb Patent Gmbh Elektrische Maschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3901281A (en) * 1972-12-27 1975-08-26 Us Air Force Aircraft fuel line
US4112183A (en) * 1977-03-30 1978-09-05 Westinghouse Electric Corp. Flexible resin rich epoxide-mica winding tape insulation containing organo-tin catalysts

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2251900A1 (en) * 1973-11-16 1975-06-13 Alsthom Cgee Laminated electric insulating material board - has asbestos, resin and glass fibre based layers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3901281A (en) * 1972-12-27 1975-08-26 Us Air Force Aircraft fuel line
US4112183A (en) * 1977-03-30 1978-09-05 Westinghouse Electric Corp. Flexible resin rich epoxide-mica winding tape insulation containing organo-tin catalysts

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4511598A (en) * 1982-10-04 1985-04-16 Xerox Corporation Electromechanical transducer protecting
US4775566A (en) * 1986-08-15 1988-10-04 Essex Group, Inc. High temperature flexible unitary sleeving insulation
US5032199A (en) * 1986-08-15 1991-07-16 Essex Group, Inc. Method of making a high temperature flexible unitary sleeving insulation
US5498461A (en) * 1993-06-25 1996-03-12 Safe-T-Quip Corporation Protective metallized loop laminate
DE19520332A1 (de) * 1995-06-02 1996-12-05 Micafil Isoliertechnik Ag Nutisolation
EP0806599A1 (de) * 1996-05-07 1997-11-12 Luigi Ture System zur Wärmedämmung
US5907205A (en) * 1996-07-08 1999-05-25 Herman; Robert Wayne Constant reluctance rotating magnetic field devices with laminationless stator
US6417593B1 (en) * 1999-01-07 2002-07-09 Siemens Westinghouse Power Corporation Composite electrical insulation with contacting layer and method of making the same
US20020047442A1 (en) * 1999-01-07 2002-04-25 Mark Lee Miller Composite electrical insulation with contacting layer and method of making the same
US7279438B1 (en) 1999-02-02 2007-10-09 Certainteed Corporation Coated insulation board or batt
US20020146521A1 (en) * 2001-02-20 2002-10-10 Toas Murray S. Moisture repellent air duct products
US6769455B2 (en) * 2001-02-20 2004-08-03 Certainteed Corporation Moisture repellent air duct products
US7220470B2 (en) 2001-02-20 2007-05-22 Certainteed Corporation Moisture repellent air duct products
US7140396B2 (en) * 2002-11-27 2006-11-28 Johns Manville Air duct containing an organic liner material
US20040118472A1 (en) * 2002-11-27 2004-06-24 Mota Joseph E. Air duct containing an organic liner material
US20040137181A1 (en) * 2003-01-14 2004-07-15 Ruid John O. Duct board with water repellant mat
US20050031819A1 (en) * 2003-01-14 2005-02-10 Mankell Kurt O. Duct board with low weight water repellant mat
US7223455B2 (en) 2003-01-14 2007-05-29 Certainteed Corporation Duct board with water repellant mat
US20050098255A1 (en) * 2003-11-06 2005-05-12 Lembo Michael J. Insulation product having nonwoven facing and process for making same
US6986367B2 (en) 2003-11-20 2006-01-17 Certainteed Corporation Faced mineral fiber insulation board with integral glass fabric layer
US20050112966A1 (en) * 2003-11-20 2005-05-26 Toas Murray S. Faced mineral fiber insulation board with integral glass fabric layer
US20050221061A1 (en) * 2004-04-02 2005-10-06 Toas Murray S Method and apparatus for forming shiplap edge in air duct board using molding and machining
US20050218655A1 (en) * 2004-04-02 2005-10-06 Certain Teed Corporation Duct board with adhesive coated shiplap tab
US20060019568A1 (en) * 2004-07-26 2006-01-26 Toas Murray S Insulation board with air/rain barrier covering and water-repellent covering
US20090266025A1 (en) * 2004-07-26 2009-10-29 Certainteed Corporation Insulation board with air/rain barrier covering and water-repellent covering
US8215083B2 (en) 2004-07-26 2012-07-10 Certainteed Corporation Insulation board with air/rain barrier covering and water-repellent covering
US20060078699A1 (en) * 2004-10-12 2006-04-13 Mankell Kurt O Insulation board with weather and puncture resistant facing and method of manufacturing the same
US20060083889A1 (en) * 2004-10-19 2006-04-20 Schuckers Douglass S Laminated duct board
EP2131465A1 (de) * 2007-03-29 2009-12-09 Relats, S.A. Isolationsröhre für kabel
EP2131465A4 (de) * 2007-03-29 2013-07-24 Relats Sa Isolationsröhre für kabel

Also Published As

Publication number Publication date
ES278757U (es) 1985-04-01
EP0094424A4 (de) 1984-04-06
WO1983001870A1 (en) 1983-05-26
ES278757Y (es) 1985-11-01
EP0094424B1 (de) 1986-02-19
EP0094424A1 (de) 1983-11-23
DE3269274D1 (en) 1986-03-27

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